AOPA - Aircraft Owners and Pilots Association www.aopa.org 

API - Associated Pilots of Iowa www.iowapilots.org

AYA - American Yankee Association www.aya.org

COO - Cessna Owner Organization www.cessnaowner.org

EAA - Experimental Aircraft Association www.eaa.org

GA TEAM 2000 www.beapilot.com

ICAO - International Civil Aviation Organization www.icao.org

PRA - Popular Rotorcraft Association www.pra.org

SPA - Seaplane Pilots Association www.seaplanes.org

SWPC - Short Wing Piper Club www.shortwing.org

USAF - United States Aerobatic Foundation www.usaf-aerobatics.org